JPS5844496B2 - Outrigger couch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arrangement for a movable working machine such as a trunk crane. Outline l) relates to the device, which consists of a telescoping jacking device provided and a support leg plate interposed between the lower end of the jacking device and the ground.

In this type of out IJ gas device, support leg plates with a large ground contact area are used to sufficiently distribute the supporting force to the ground and stably support the working machine even on soft ground. When the large support leg plate is swingably connected to the lower end of the jacking device, when the outrigger device is retracted and the work machine is moved, the large support leg plate protrudes into and out of the vehicle of the work machine, reducing the load clearance and making it difficult to move the vehicle. Therefore, in conventional outrigger devices of this type, when the outrigger device is stored and the work machine is moved, the support leg plate must be manually removed from the lower end of the jacking device. The outrigger device is stored in a suitable location that does not have the above-mentioned adverse effect on the traveling movement of the working machine, and when the outrigger device is used, the support leg plate in the storage location is manually placed at the lower end of the jacking device.

However, such manual work of storing and arranging the support leg plates is extremely complicated, and this has had a negative impact on the work efficiency of working machines such as trunk cranes.

The present invention has been made in view of the above points.
When storing the IJ gas device, the support leg plate is automatically brought to a storage position that does not interfere with the traveling movement of the work machine, and when using the outrigger device, the support leg plate is automatically moved between the lower end of the jacking device and the ground. The present invention provides an outrigger device that can be brought into position.

Embodiments of the present invention will be described in detail below with reference to the drawings.

The outrigger device A is a foreign machine 1 that is horizontally suspended and fixed to the underside of the vehicle frame of a movable working machine such as a trunk crane.
The inner cylinder 2 is inserted into the outer cylinder 1 and driven to extend and retract by a double-acting hydraulic cylinder (not shown), and the jacking device 3 and outrigger device A provided at the outer end of the inner cylinder 2 are used to provide a jack. It is intercepted from a support leg plate 4 interposed between the lower end of the device 3 and the ground.

The jacking device 3 is intercepted by a double-acting hydraulic cylinder, and its fixed side cylinder part 5 is fixed to the outer end of the inner cylinder 2, and its driven side piston rod 6 is directed downward. A support recess 8 for supporting a ball end 7 provided at the lower end of the hydraulic jack device 3 is provided on the upper side of the support leg plate 4, which is attached to the rear 1.
When in use, the supporting force of the jacking device 3 is transmitted to the support leg plate 4 via the ball end 1 and the support recess 8.

The piston rod 6, which is the receiving and driving side of the jacking device 3, has a horizontal support perpendicular to the direction in which the inner cylinder 2 extends.
9' is provided, and the mounting support @]9,9' is the arm 10,
10' is pivotally supported.

The arm 10.10'i is connected to the support leg plate 4 below the support shafts 9, 9' - the support connected to the body! 11 and 11' are rotatably arranged.

An interlocking mechanism, which will be described later, is disposed between the arms 10, 10' and the outer cylinder 1, and near the end of the contraction movement of the inner cylinder 2, the contraction movement is performed and the arms 10, 10' are rotated inward. The structure is such that the support leg plate 4 can be moved and stored.

In this embodiment, the movement mechanism is particularly constructed as follows.

That is, the links 12, 12' integrally connected to the arms 10, 10' engage with the links 12, 12' to support the contraction movement of the inner cylinder 2 by supporting the support leg plate 4 centered at 9.9'. The bushing plates 14 and 14' have guide portions 13 slightly projecting outward from their base ends 16 and 16' for rotational movement, and the outer lower side of the cylinder 5 which is the fixed side of the jacking device 3. The guide member 15 is formed of a semi-cylindrical shape with a notch cut diagonally downward from the center of the cylinder.

Next, to explain the operation, when the jacking device 3 is contracted from the working state (FIG. 2), the support shafts 9, 9' collide with the guide member 15, and the support shafts 9, 9' (i.e., arm 1
0, 10' and the support leg plate 4) via the support shaft 11, 11'
The jacking device 3 rotates until it is perpendicular to the extending direction of the inner cylinder 2, and the jacking device 3 becomes the most contracted state.

Note that the support shafts 9 and 9' are connected to the inner cylinder 2 before the jacking device 3 is reduced.
When the support shaft 9 is in a state perpendicular to the extending direction of the
, 9' and the guide member 15 do not come into contact with each other as the jacking device 3 is reduced.

Next, when the inner cylinder 2 contracts and reaches near the end of the contraction movement, the upper parts of the links 12 and 12' collide with the force 11 part 13, and the further contraction of the inner cylinder 2 causes the bush plates 14 and 14'
The distal ends 16 and 16' of the arms 10 and 10', which serve as the point of force of the links 12 and 12', are attached to the support shafts 9 and 9' of the arms 10 and 10', which are integrally connected to the links 12 and 12'.
and a support shaft integrally connected to the support leg plate 4 ] 11 , 11
1 geometrical function as a point of action occurs in ', and the supporting shaft 11.11
' is the one that rotates inward, and the mounting support @11,11
The support leg plate 4 integrally connected to the piston rod 6 is moved inwardly and upwardly away from the piston rod 6 and brought to the retracted position shown in FIG.

The movement of the support leg plate 4 from the storage position to the working position is the reverse of the above.

Since the present invention is constructed and operates as follows,
There is no need to store or install the support leg plate manually.
This is effective in increasing the work efficiency of movable working machines such as truck cranes.

In the above embodiment, the support N]9.9' is provided on the ring 11 which is rotatably fitted into the lower end of the piston rod 6, which is the driven side of the jacking device 3. This is to ensure that even if the inner cylinder 2 rotates, the support shafts 9, 9' are always positioned in a direction perpendicular to the direction in which the inner cylinder 2 extends.

Such a configuration enables automatic straightening IE in the direction of the support leg plate 4 when the support @9.9' is guided by the guide member 15 and engaged therewith, so that the jacking device This is particularly effective when the driven side piston rod is configured with three driven side piston rods.

[Brief explanation of the drawing]

FIG. 1 is a front view of a reduced state of the jacking device of the adjustment device according to the present invention, FIG. 2 is a side view of the same jacking device during operation, and FIG. 3 is a perspective view of FIG. 1. 1... Outer cylinder, 2... Inner cylinder, 3...
... Jacking device, 4 ... Support leg plate, 9 ...
...Spindle, 10...Arm.

Claims (1)

[Claims] 1 Out IJ consisting of an inner cylinder that is inserted into the outer cylinder so that it can be protruded and stored freely, a jacking device installed at the outer end of the inner cylinder and driven in a curve by hydraulic pressure, and a support leg plate interposed between the lower end of the jacking device and the ground. In the device, the support leg plate is
It is engaged with an arm provided on the driven side of the jacking device and swingably suspended from a horizontal support shaft perpendicular to the extending direction of the inner cylinder; and this reduces the movement of the inner cylinder between the arm and the outer cylinder. An outrigger device comprising a movement mechanism that converts the contraction movement into an inward rotation movement of the arm near the terminal end and moves and stores the support leg plate.